CN102966918A - LED (light emitting diode) illuminating equipment based on color mixing and remote fluophor layout - Google Patents
LED (light emitting diode) illuminating equipment based on color mixing and remote fluophor layout Download PDFInfo
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- CN102966918A CN102966918A CN2011102702842A CN201110270284A CN102966918A CN 102966918 A CN102966918 A CN 102966918A CN 2011102702842 A CN2011102702842 A CN 2011102702842A CN 201110270284 A CN201110270284 A CN 201110270284A CN 102966918 A CN102966918 A CN 102966918A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
- F21V3/12—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention provides LED (light emitting diode) illuminating equipment based on color mixing and remote fluophor layout. The illuminating equipment comprises two or more groups of illuminating elements and a fluorescent part, wherein each group of illuminating element has respective wavelength range; the fluorescent part can produce fluorescent light under the initiation of the light emitted by the illuminating elements; the fluorescent part is apart from the illuminating elements in the light propagation direction of the illuminating elements, and the light of the groups of the illuminating elements is combined with the fluorescent light to form white light. According to the illuminating equipment adopting such configuration, improved color rendering property is provided, and uniform light mixing can be ensured.
Description
Technical field
The present invention relates to lighting apparatus, be specifically related to the LED lighting apparatus that color-based mixes and remote phosphor is arranged.
Background technology
In recent years, existence based on the lighting apparatus of LED (light emitting diode), is used for the various application such as family, market, street and office etc. in a large number on the market.Compare with conventional fluorescent, LED-based lighting apparatus can provide longer life-span and the energy efficiency of Geng Gao, and more environmental protection.
Yet these still facing to some difficulties, can not be used it based on the lighting apparatus of white light LEDs more widely.These problems comprise light distribution uniformity, colour developing ability (color rendering ability), color stability, efficient and cost etc.
Especially, the colour rendering index of LED (CRI) is usually lower, and for cold white light, typical colour rendering index is in the scope of 70-80, and for warm white, typical colour rendering index is in the scope of 80-90.
For example, existing colour rendering index with white light LEDs T8 fluorescent tube of Transparent lamp shade (cover) is generally 70-80, and exists spot light to distribute and hot problem to color displacement.
In order to improve colour rendering, usually adopt the mode of colour mixture.Yet, colour mixture mode for " white light LEDs+redness " of routine, be difficult to control colour consistency, usually need complicated circuit design, and owing to there is color displacement in the deteriorated behavior of different thermics of dissimilar fluorophor (for example yellow fluorophor in red-emitting phosphors and the white light LEDs).
In addition, there are the following problems for existing blend of colors technology:
Do not have light to mix in the situation of needed enough distances in lighting apparatus, the color of mixing is inconsistent and may have the light tone spot;
In the situation of using diffraction lamp shade with the raising light distribution uniformity, cause lower luminous efficiency; And
The thermic color displacement.
As shown in Figure 1a, when the distance between scattering fluorescence part and the light-emitting component 110,120 during less than d, come the light of self- emission device 110 and 120 in the situation of unmixed, to arrive the scattering fluorescence part, thereby produce the light tone spot shown in Fig. 1 b, therefore can affect the color of lighting apparatus and the uniformity of brightness.In the drawings, α represents the light angle of divergence of light-emitting component, and L represents the distance between the adjacent light-emitting component.
Summary of the invention
The purpose of this invention is to provide a kind of lighting apparatus, it can provide improved colour rendering, and can guarantee that consistent light mixes.
According to embodiments of the invention, a kind of lighting apparatus is provided, comprising: the two or more groups light-emitting component, wherein every group of light-emitting component has wave-length coverage separately; And fluorescence part, its can be under the exciting of the light of light-emitting component emission generation fluorescence, wherein, fluorescence part is spaced apart with light-emitting component on the optical propagation direction of light-emitting component, and light and the fluorescence of respectively organizing light-emitting component are combined into white light.
In one embodiment of the invention, the two or more groups light-emitting component forms array with predetermined quantity than alternately.
In one embodiment of the invention, the face of cylinder parts of fluorescence part for arranging around light-emitting device array.
In one embodiment of the invention, this two or more groups light-emitting component comprises blue light-emitting diode and red light-emitting diode, and fluorescence part has yellow fluorophor.
In one embodiment of the invention, the quantity of blue light-emitting diode and red light-emitting diode ratio is 3: 1.
In one embodiment of the invention, this two or more groups light-emitting component comprises mintcream light emitting diode and amber light emitting diode.
In one embodiment of the invention, fluorescence part and light-emitting component are isolated satisfies apart from d:
Wherein, L is the distance between the adjacent light-emitting component, and α is the light angle of divergence of light-emitting component.
Description of drawings
Fig. 1 a is the luminous light path schematic diagram that illustrates for the LED of colour mixture;
Fig. 1 b is illustrated in the colour mixture distance less than the design sketch of the light tone spot that occurs in the situation apart from d shown in Fig. 1 a;
Fig. 2 a is the stereogram that illustrates according to the structure example of the lighting apparatus of the embodiment of the invention;
Fig. 2 b is the partial section that the lighting apparatus shown in Fig. 2 a is shown;
Fig. 3 a and Fig. 3 b are respectively the blue-ray LED that uses in the exemplary embodiment of the present and the spectrogram of red-light LED;
Fig. 4 a and Fig. 4 b are respectively fluorescence emission spectrum and the fluorescent powder grain size distribution figure of the yellow fluorescent powder that uses in the exemplary embodiment of the present;
Fig. 5 a illustrates the white-light spectrum that the blend of colors in the according to an exemplary embodiment of the present invention remote phosphor configuration obtains;
Fig. 5 b illustrates the position of white light in XYZ chromaticity diagram that the blend of colors in the according to an exemplary embodiment of the present invention remote phosphor configuration obtains;
Fig. 6 a is the stereogram that the ios dhcp sample configuration IOS DHCP of the lighting apparatus that has according to another embodiment of the present invention the Down lamp structure is shown;
Fig. 6 b is the cutaway view that the lighting apparatus shown in Fig. 6 a is shown.
The specific embodiment
Exemplary embodiment of the present invention is described with reference to the accompanying drawings.In the accompanying drawings, represent same or analogous part with same or analogous Reference numeral.For fear of having blured main points of the present invention because of unnecessary details, only illustrate in the accompanying drawings and the closely-related structure of the solution of the present invention and parts, concern other little details and omitted.
Fig. 2 illustrates the according to an embodiment of the invention example of the structure of lighting apparatus.Lighting apparatus 200 according to present embodiment comprises fluorescence part 210, light-emitting component 220, carries the circuit board 230 of light-emitting component 220, and housing 240.
Light-emitting component 220 can comprise the two or more groups light-emitting component, and wherein every group of light-emitting component has emission wavelength scope separately.In this exemplary embodiment, light-emitting component 220 comprises the group of a plurality of blue-ray LED 220a formations and the group that a plurality of red-light LED 220b consists of.
In addition, each organizes light that light-emitting component launches and the fluorescence of fluorescence part 210 is combined into white light.In this exemplary embodiment, fluorescence part 210 comprises yellow fluorescent powder, thereby is combined into white light with light that blue-ray LED 220a and red-light LED 220b launch.
Fig. 2 b illustrates the partial section of the lighting apparatus 200 shown in Fig. 2 a.Blue-ray LED 220a and red-light LED 220b form array with the predetermined quantity ratio.In shown exemplary embodiment, blue-ray LED 220a and red-light LED 220b with 3: 1 quantity than be arranged in a straight line interlaced with each otherly.Yet, in other embodiments, each is organized can have different quantity ratios between the light-emitting component, and can be with other arranged in form, for example, light-emitting component can be arranged in m * n array, perhaps can be dispersed in border circular areas interior (in the Down lamp structure that will illustrate in the back) etc.
In addition, illustrated with reference to Fig. 1 such as the front, preferably satisfy following formula (1) apart from d between the light-emitting area of fluorophor 210 and light-emitting component 220, with the blend of colors uniformity that guarantees lighting apparatus 200 and the appearance of avoiding the light tone spot:
Wherein, L is the spacing between the adjacent light-emitting component in the light-emitting device array, and α is the light angle of divergence of light-emitting component.
Below in conjunction with the test result of concrete example explanation according to the lighting apparatus of the specific embodiment of the invention.Wherein, blue-ray LED 220a adopts the blue-ray LED of the LTST-T680TBKT model of Liteon company, its centre wavelength is that the full width at half maximum (FWHM) of 453nm, spectrum peak is 21nm (wave-length coverage: 442～463nm), and red-light LED 220b adopts the red-light LED of the LTST-T680KRKT model of Liteon company, and its centre wavelength is that 631nm, FWHM are 15nm (wave-length coverage: 624～639nm).The Wavelength distribution of above-mentioned blue-ray LED and red-light LED is respectively shown in Fig. 3 a and Fig. 3 b.Fluorophor in the fluorescence part 210 adopts the fluorescent material of the EY4254 model of Intematix company, and the CIE of its fluorescence (1931) coordinate is x=0.423, y=0.550, and emission peak is positioned at 558nm, fluorescent powder grain density 2500/mm
3, the wavelength of fluorescence distribution of this fluorescent material and particle size distribution are respectively shown in Fig. 4 a and Fig. 4 b.
Fig. 5 a illustrates the white-light spectrum that obtains by the blend of colors in the above-mentioned remote phosphor configuration.Fig. 5 b illustrates the position of white light in XYZ chromaticity diagram that the blend of colors of the remote phosphor configuration of this exemplary embodiment obtains.A is indicated such as the figure mid point, and the light that obtains coordinate in CIE figure is about x=0.45, y=0.40, and its colour temperature is 2717K, belongs to warm white.
Below table 1 listed the R1-R15 colour rendering index that utilizes the light that the lighting apparatus according to this exemplary embodiment obtains, to obtain thus its overall colour rendering index be 93.458.
Table 1: the R1-R15 colour rendering index of the light that the present embodiment lighting apparatus produces
| No. | The standard testing color card | CRI |
| 1 | TCS1[7.5R 6/4; Nectar] | 97.698 |
| 2 | TCS2[5Y 6/4; Dull gray is yellow] | 95.468 |
| 3 | TCS3[5GY 6/8; Saturated yellow green] | 81.467 |
| 4 | TCS4[2.5G 6/6; Medium yellow green] | 92.852 |
| 5 | TCS5[10BG 6/4; Pale bluish green] | 97.330 |
| 6 | TCS6[5PB 6/8; Light blue] | 92.905 |
| 7 | TCS7[2.5P 6/8; Lilac] | 94.250 |
| 8 | TCS8[10P 6/8; Pale red purple] | 95.692 |
| 9 | TCS9[4.5R 4/13; Saturated red] | 96.565 |
| 10 | TCS10[5Y 8/10; Saturated yellow] | 81.471 |
| 11 | TCS11[4.5G 5/8; Saturated green] | 93.029 |
| 12 | TCS12[3PB 3/11; Saturated blue colors] | 72.728 |
| 13 | TCS13[5YR 8/4; Pale yellow powder (westerner's colour of skin)] | 99.094 |
| 14 | TCS14[5GY 4/4; Medium olive-green (leaf green)] | 86.647 |
| 15 | TCS15[1YR 6/4; Asian's colour of skin] | 96.730 |
The blue-ray LED that in above example, illustrates and the combination of red-light LED, can also adopt other light-emitting component combination according to the lighting apparatus of the embodiment of the invention.For example, can adopt the combination of mintcream (Mint) LED and amber (Amber) LED.Particularly, can adopt mintcream LED and amber LED to be arranged in array than alternately with the quantity of for example 2: 1 or 3: 1.In addition, because the light of mintcream LED and amber LED can be combined into white light, so fluorophor for example can adopt the fluorophor of yellow or other appropriate color.
In addition, can also select the combination of other suitable light-emitting component and fluorophor.For example, can scheme with reference to CIE, select to have the light-emitting component of suitable CIE coordinate and fluorophor to be combined into white light.In addition, though above the example that adopts two kinds of light-emitting components has been described, also can adopt the light-emitting component more than two kinds to come to make up to produce the output light with high-color rendering with fluorophor.
More than show the exemplary embodiment that has the lighting apparatus of fluorescent tube form according to of the present invention, yet, other form also can be had according to lighting apparatus of the present invention, for example Down lamp (down light).
Fig. 6 a and Fig. 6 b illustrate respectively stereogram and the cutaway view thereof of lighting apparatus 600 ios dhcp sample configuration IOS DHCPs that have according to another embodiment of the present invention the Down lamp structure.
Although light-emitting component is arranged at grade in the above-described embodiments, the invention is not restricted to this.Can arrange light-emitting component according to concrete application ﹠ design needs, for example, light-emitting component can be arranged in curved surface (for example, sphere) and go up or be arranged on the different planes.In addition, fluorescence part can have different structures according to the concrete arrangement of concrete application ﹠ design needs and light-emitting component, as long as fluorescence part is spaced apart with light-emitting component on the direction of propagation of light-emitting component issued light, thereby the light of respectively organizing light-emitting component can access sufficient mixing when arriving fluorescence part.
By the configuration of using remote phosphor to combine with blend of colors, mix to obtain consistent light so that have enough distances between light-emitting component and the fluorophor, make it possible to realize that a light of making peace stable exports, and make it possible to realize the raising of colour rendering.In addition, this configuration makes it possible to comparatively freely to select consist of the kind of light-emitting component and the fluorophor of lighting apparatus.
Although describe with reference to the accompanying drawings embodiments of the invention in detail, yet those skilled in the art should understand and can carry out various modification, modification, combination and sub-portfolio to the present invention according to the design needs, as long as this modification falls in the essence and scope of appended claims.
Claims (7)
1. lighting apparatus comprises:
The two or more groups light-emitting component, wherein every group of light-emitting component has wave-length coverage separately; And
Fluorescence part, its can be under the exciting of the light of described light-emitting component emission generation fluorescence,
Wherein, described fluorescence part is spaced apart with described light-emitting component on the optical propagation direction of described light-emitting component, and light and the described fluorescence of respectively organizing described light-emitting component are combined into white light.
2. lighting apparatus according to claim 1, wherein, described two or more groups light-emitting component forms array with predetermined quantity than alternately.
3. lighting apparatus according to claim 2, wherein, the face of cylinder parts of described fluorescence part for arranging around described array.
4. each described lighting apparatus according to claim 1-3, wherein, described two or more groups light-emitting component comprises blue light-emitting diode and red light-emitting diode, and described fluorescence part has yellow fluorophor.
5. lighting apparatus according to claim 4, wherein, the quantity of described blue light-emitting diode and described red light-emitting diode ratio is 3: 1.
6. each described lighting apparatus according to claim 1-3, wherein, described two or more groups light-emitting component comprises mintcream light emitting diode and amber light emitting diode.
7. each described lighting apparatus according to claim 1-3, wherein, described fluorescence part and described light-emitting component are isolated to be satisfied apart from d:
Wherein, L is the distance between the adjacent light-emitting component, and α is the light angle of divergence of described light-emitting component.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102702842A CN102966918A (en) | 2011-08-30 | 2011-08-30 | LED (light emitting diode) illuminating equipment based on color mixing and remote fluophor layout |
| US14/241,459 US20140233211A1 (en) | 2011-08-30 | 2012-08-09 | Led luminaires based on color mixing and remote phosphor arrangement |
| DE112012003580.1T DE112012003580T5 (en) | 2011-08-30 | 2012-08-09 | LED lights based on color mixing and a remote phosphor arrangement |
| PCT/EP2012/065621 WO2013029960A1 (en) | 2011-08-30 | 2012-08-09 | Led luminaires based on color mixing and remote phosphor arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102702842A CN102966918A (en) | 2011-08-30 | 2011-08-30 | LED (light emitting diode) illuminating equipment based on color mixing and remote fluophor layout |
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| Publication Number | Publication Date |
|---|---|
| CN102966918A true CN102966918A (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102702842A Pending CN102966918A (en) | 2011-08-30 | 2011-08-30 | LED (light emitting diode) illuminating equipment based on color mixing and remote fluophor layout |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140233211A1 (en) |
| CN (1) | CN102966918A (en) |
| DE (1) | DE112012003580T5 (en) |
| WO (1) | WO2013029960A1 (en) |
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| CN104517949A (en) * | 2014-12-25 | 2015-04-15 | 天水华天科技股份有限公司 | HV-COB LED light source based on remote phosphor powder excitation |
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| DE102009035369B4 (en) * | 2009-07-30 | 2018-03-22 | Osram Gmbh | Light module, light strip with several connected light modules and method for assembling a light strip |
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- 2011-08-30 CN CN2011102702842A patent/CN102966918A/en active Pending
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- 2012-08-09 DE DE112012003580.1T patent/DE112012003580T5/en not_active Withdrawn
- 2012-08-09 WO PCT/EP2012/065621 patent/WO2013029960A1/en active Application Filing
- 2012-08-09 US US14/241,459 patent/US20140233211A1/en not_active Abandoned
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| US20020176259A1 (en) * | 1999-11-18 | 2002-11-28 | Ducharme Alfred D. | Systems and methods for converting illumination |
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| CN104517949A (en) * | 2014-12-25 | 2015-04-15 | 天水华天科技股份有限公司 | HV-COB LED light source based on remote phosphor powder excitation |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140233211A1 (en) | 2014-08-21 |
| WO2013029960A1 (en) | 2013-03-07 |
| DE112012003580T5 (en) | 2014-07-03 |
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